import java.util.concurrent.locks.ReentrantLock;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 19182
 * Date: 2025-09-25
 * Time: 21:42
 */
public class demo1 {
    private static int count = 0;
    private static ReentrantLock locker = new ReentrantLock();

    public static void main(String[] args) throws InterruptedException {
        Thread t1 = new Thread(()->{
            for(int i = 0; i < 50000; i++){
                locker.lock();
                count++;
                locker.unlock();
            }
        });
        Thread t2 = new Thread(()->{
            for(int i = 0; i < 50000; i++){
                locker.lock();
                count++;
                locker.unlock();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);
    }
}
